400 ppm Quat Test Strips for Restaurants

SKU: 33819-400

$10.19USD or lower Each

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[4.9]   9 Reviews    | Write a Review

Ensure safe food handling in restaurants, cafes, and catering with Indigo® quick response 400ppm quat test strips. Simple sanitizer testing protects customers, meets health codes, and reduces cross-contamination risks.

In food service, sanitizer effectiveness is non-negotiable. Quat sanitzers must be held at the proper ppm levels to comply with health inspections, reduce cross-contamination, and protect guests from foodborne illness. Indigo® Quat test strips provide a quick, reliable way for restaurants, cafes, and catering services to verify sanitizer buckets, spray bottles, and third-sink concentrations. Without testing, quats may drop below effective levels or become too strong, risking surface residues and failed compliance checks.

Details Specs Docs Reviews
Details

Best Practices for Food Service Using 400 ppm Quat (QAC) Test Strips

  • Test Daily: Check sanitizer buckets at shift changes and before inspections.
  • Use Fresh Solutions: Quat levels degrade when exposed to food soils, detergents, or extended standing time.
  • Match Label Guidelines: Always test against the manufacturer’s specified ppm range.
  • Train Staff: Ensure all kitchen workers know how to dip strips and read results accurately.
  • Document Results: Keeping a logbook can satisfy inspectors and demonstrate compliance
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Specifications

Temperature and QAC strips reading relationship

Temperature vs ppm results for commercial formulations of quaternary amine sanitizers/disinfectants from 20 to 60oC (68-140F).

T (oC/oF) QAC strips readings at: 0; 50; 100; 200; 400 ppm
20/68 Readings ok for 0-400ppm
25/77 Readings ok for 0-400ppm
30/86 Readings ok for 0-400ppm
35/95 Readings ok for 0-400ppm
40/104 Readings ok for 0-400ppm
45/113 0, 50, 100 ppm readings ok;
200 & 400 ppm read~ 1/2 color square higher
50/122 50, 100 ppm read~ 1/2 color square higher; 200, 400 ppm read 1 color square higher
55/131 Readings 1 color square higher across whole range
60/140 Readings 1 color square higher across whole range

Dip strip for 1-2 seconds & get readings in 10 seconds at 0-100-200-400 ppm for quaternary ammonium disinfectant concentration. Read strip results immediately. If you wait the 30 seconds needed for some other strips you will get a reading that is too high.

  • Indigo® test strips have a guaranteed minimum 3 year shelf life but are stored in desiccant lined vials so actual shelf life can be 5+ years.
  • For technical explanation, read: Sanitizer Test Strip Expiration; Good Today, Dead Tomorrow?
  • These strips measure any quat formulation
  • Indigo® QAC test strips are calibrated for Oasis 146: see details. Consult your supplier if necessary.
  • The number of strips (100) per vial is approximate.

Indigo® brand test strips are Made in USA & tested for accuracy using NIST compliant standards.

Documentation

Test Strip Documentation
Stability Statement Certificate of Analysis SDS
Indigo Quat - QAC Test Strips 0-400ppm Stability Statement Indigo Quat - QAC Test Strips 0-400ppm Certificate of Analysis Indigo Quat - QAC Test Strips 0-400ppm SDS
Reviews (9)
2024-11-19

Great product and great customer service!

— Davis
2023-05-23

Consistent product, that is used repeatedly, Shipping times are as expected. Online ordering is easy.

— Mik
2023-02-01

Great customer service! Contacted me to let me know there was a less expensive shipping rate available. Very helpful.

— Vanessa
2020-08-25
Good quality product indeed !
— Sureemart
2018-06-07

Great product, much more affordable than competitor prices. Quick delivery.

— Krystle
— Indigo:

Thanks for noting our prices. Our discounts start at just 2 it costs the same to as 1.

2018-05-04

They work wonderfully, was so happy to finally solve my sanitizer testing problems and to use hot water is great as well.

— Cindy
— Indigo:

Thanks for letting us know your experience with hot water. The chemist who designed the strips even provided us with instructions on what to expect when using hot water with quats.

2018-01-09

Great product as always and excellent service.

— john
2017-09-20

Excellent product- temperature range is far more liberal and fits our needs. State surveyor recommended! Down side is cost may be a factor considering old strips are provided for free from our vendor.

— Brett Anderson
— Indigo:

If you are using old strips, be careful as they may not be accurate. We in fact guarantee ours for 3 years minimum. 

2017-08-08
The order came very quickly and is producing the results we hoped for when ordering this product
— Rob
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